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                <div class="bbp-reply-header" id="post-342135">
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                  <span class="bbp-reply-post-date">
                   2013年1月29日 上午1:41
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                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/109241/">
                    knitr无法编译Rnw成pdf
                   </a>
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                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/109241/#post-342135">
                   6 楼
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                  <a class="bbp-author-name" href="http://cos.name/cn/profile/375060/" rel="nofollow" title="查看hygs的档案">
                   hygs
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                  <p>
                   回复 第5楼 的 谢益辉：一个是中文下的，一个是英文下的。也就是说这边暂时还不支持中文。
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                <div class="bbp-reply-header" id="post-342086">
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                   2013年1月27日 上午8:14
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                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/109241/">
                    knitr无法编译Rnw成pdf
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                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/109241/#post-342086">
                   4 楼
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                  <p>
                   回复 第3楼 的 newbye：我把你的代码贴过来运行，发现不加！时，运行正确。加上！后结果为hello worldiijA，加上中文字符也是乱码。
                   <br/>
                   日志文件：
                  </p>
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                   LaTeX Font Info:    … okay on input line 4.
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                   (C:\CTEX\MiKTeX\tex\context\base\supp-pdf.mkii
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                   Output written on sweave.pdf (1 page, 20818 bytes).
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                  </p>
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                <div class="bbp-reply-header" id="post-341642">
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                  <span class="bbp-reply-post-date">
                   2013年1月17日 上午5:57
                  </span>
                  <span class="bbp-header">
                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/109107/">
                    大约三十万个真实的经纬度数据，用什么技术和方式呈现比较合适呢？
                   </a>
                  </span>
                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/109107/#post-341642">
                   5 楼
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                  <p>
                   回复 第1楼 的 肖楠：试试ArcGIS吧，安装后按这个方法做。http://wenku.baidu.com/view/3b8ad30b4a7302768e993986.html
                  </p>
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                <div class="bbp-reply-header" id="post-341446">
                 <div class="bbp-meta">
                  <span class="bbp-reply-post-date">
                   2013年1月9日 上午8:16
                  </span>
                  <span class="bbp-header">
                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/109081/">
                    一千多万行的sql，用RODBC来连接，按一定条件筛选结果，调入到工作区（内存？）内，速度还是慢，如何优化。
                   </a>
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                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/109081/#post-341446">
                   4 楼
                  </a>
                  <span class="bbp-admin-links">
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                <div class="even bbp-parent-forum-999 bbp-parent-topic-109081 bbp-reply-position-4 user-id-375060 post-341446 reply type-reply status-publish hentry">
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                  <br/>
                  <a class="bbp-author-name" href="http://cos.name/cn/profile/375060/" rel="nofollow" title="查看hygs的档案">
                   hygs
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                  <p>
                   回复 第1楼 的 daigazi：建立索引，比如按使用频率、关键字或者其他什么
                  </p>
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                <div class="bbp-reply-header" id="post-340889">
                 <div class="bbp-meta">
                  <span class="bbp-reply-post-date">
                   2012年12月19日 下午11:55
                  </span>
                  <span class="bbp-header">
                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/108949/">
                    任意数量坐标点间平均距离计算问题
                   </a>
                  </span>
                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/108949/#post-340889">
                   5 楼
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                  <p>
                   回复 第4楼 的 肖楠：明白了，多谢肖版主指教！
                  </p>
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                <div class="bbp-reply-header" id="post-340876">
                 <div class="bbp-meta">
                  <span class="bbp-reply-post-date">
                   2012年12月19日 下午2:01
                  </span>
                  <span class="bbp-header">
                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/108949/">
                    任意数量坐标点间平均距离计算问题
                   </a>
                  </span>
                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/108949/#post-340876">
                   3 楼
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                   hygs
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                  <p>
                   回复 第2楼 的 肖楠：肖版主回复的好快啊，但是我还是没看懂您怎么解决坐标点组合问题的。
                  </p>
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                <div class="bbp-reply-header" id="post-340870">
                 <div class="bbp-meta">
                  <span class="bbp-reply-post-date">
                   2012年12月19日 下午12:56
                  </span>
                  <span class="bbp-header">
                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/105961/">
                    ggplot2包的使用情况调查
                   </a>
                  </span>
                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/105961/page/2/#post-340870">
                   16 楼
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                <div class="odd bbp-parent-forum-1011 bbp-parent-topic-105961 bbp-reply-position-16 user-id-375060 post-340870 reply type-reply status-publish hentry">
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                  <p>
                   回复 第2楼 的 肖楠：请问你是怎样确定搜索关键字的？我习惯用中文搜索，在R中很多都要用英文搜索，用英文简写吗？
                  </p>
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                <div class="bbp-reply-header" id="post-340762">
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                  <span class="bbp-reply-post-date">
                   2012年12月17日 上午3:20
                  </span>
                  <span class="bbp-header">
                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/108836/">
                    【R语言训练营】炼金术士成长之路（第一篇章）
                   </a>
                  </span>
                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/108836/page/4/#post-340762">
                   48 楼
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                  <p>
                   刚刚看到帖子，用EXCEL捣鼓了一下，说说思路吧：
                   <br/>
                   第一题：1按ID排序
                   <br/>
                   2分类汇总
                   <br/>
                   第二题：1按ID排序
                   <br/>
                   2使用EXCE分列工具将日期和时间分开
                   <br/>
                   3使用条件函数（公式：IF(A3=A2,IF(B3=B2,0,1),1)，意思是如果id（A列）不变，则判断日期（B列）是否和上一行相同，相同记0不同记1；如果id（A列）变化，记1。）
                   <br/>
                   4分类汇总
                  </p>
                  <p>
                   不知道在R里面怎么写上面那个公式，哪位能给提示下吗？
                  </p>
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                <div class="bbp-reply-header" id="post-339592">
                 <div class="bbp-meta">
                  <span class="bbp-reply-post-date">
                   2012年11月17日 上午6:56
                  </span>
                  <span class="bbp-header">
                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/108600/">
                    《R语言时间序列初探！》（入门教程，欢迎下载）
                   </a>
                  </span>
                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/108600/#post-339592">
                   8 楼
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                  <p>
                   多谢楼主
                  </p>
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                <div class="bbp-reply-header" id="post-338580">
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                  <span class="bbp-reply-post-date">
                   2012年10月25日 上午5:07
                  </span>
                  <span class="bbp-header">
                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/108368/">
                    global dimension reduction for nearest neighbors
                   </a>
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                  <a class="bbp-reply-permalink" href="http://cos.name/cn/topic/108368/#post-338580">
                   2 楼
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                  <p>
                   回复 第1楼 的 dumpling：楼上应该不是求翻译，所以请解释一下你想知道的是什么
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                <div class="bbp-reply-header" id="post-337858">
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                  <span class="bbp-reply-post-date">
                   2012年10月10日 上午5:30
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                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/108215/">
                    谁能解释一下factor crossing是什么意思
                   </a>
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                   5 楼
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                   回复 第4楼 的 肖楠：明白了，谢谢！
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                   2012年10月9日 上午9:05
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                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/108215/">
                    谁能解释一下factor crossing是什么意思
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                   3 楼
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                   回复 第2楼 的 wind-wood：公式是表示数量关系的等式，算术表达式是通过算数运算符来进行运算的数学公式，这两个本质是一样的啊，楼上能说的再明白点吗？
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                   2012年9月24日 上午8:10
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                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/108093/">
                    奇怪的问题：longer object length is not a multiple of shorter object length
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                   3 楼
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                   回复 第2楼 的 kuanguang：左右长度指什么？
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                   2012年9月24日 上午7:02
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                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/104292/">
                    11年1月的译著:《时间序列分析及应用: R语言》
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                   14 楼
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                   回复 第11楼 的 penny388：新浪爱问
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                   2012年9月24日 上午7:00
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                   回复：
                   <a class="bbp-topic-permalink" href="http://cos.name/cn/topic/104292/">
                    11年1月的译著:《时间序列分析及应用: R语言》
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                   13 楼
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                   回复 第1楼 的 肖楠：书是不错，本人水平有限看着很吃力啊，好多公式都不知道是从哪里来的
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